Title:
Combined telegraph and telephone system
United States Patent 2764633
US Patent References:
Telephone system
- - 1887588
Communication system
- - 2222751
Telephone answering and recording device
- - 2673241
Telephone system
- - 1887588
Communication system
- - 2222751
Telephone answering and recording device
- - 2673241
Inventors:
Fernandez, Serrataco John R.
Publication Date:
09/25/1956
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Assignee:
Fernandez, Serrataco John R.
Primary Class:
International Classes:
H04M1/65; H04M11/06